Magazine for a firearm



FIG. 1 is a top perspective view of a magazine for a firearm showing our new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear side elevational view thereof;

FIG. 6 is a front side elevational view thereof;

FIG. 7 is a top plan view showing an aperture and a portion of the front side thereof; and,

FIG. 8 is a bottom plan view thereof.

The dashed lines in FIGS. 1-8 are shown for illustrative purposes and form no part of the claimed design. 

The ornamental design for a magazine for a firearm, as shown and described. 